castaño
/kasˈtaɲo/ · B2 · adj
brown
🌰 castaño = castaña (chestnut) + -o; the tree and its color share a name
Spanish castaño comes from Latin castanea, meaning chestnut. The tree is castaño, and hair or eyes the color of its nut are described as castaño too. Link the sound cas-TA-ño to chestnut's 'cast' and 'nut'.